Technical Description; Power; Power Requirements; Voltage Regulators - Epson S1D13513 User Manual

4 Technical Description

4.1 Power

4.1.1 Power Requirements

4.1.2 Voltage Regulators

4.1.3 S1D13513 Power

S5U13513P00C100 Evaluation Board
Rev. 1.2
The S5U13513P00C100 evaluation board requires an external regulated power supply
(3.3V at 1A). The power is supplied to the evaluation board through pin 5 of the P2 header,
or pin 29 of the H2 header.
The green LED '3.3V Power' is turned on when 3.3V power is applied to the board.
The S5U13513P00C100 evaluation board has an on-board linear regulator to provide the
1.8V power required by the S1D13513 Display Controller.
Additionally, there is a step-up switching voltage regulator to generate 6~24V. This output
is adjustable and can be used to power the LED backlight on some LCD panels.
The S1D13513 Display Controller requires 1.8V and 3.3V power supplies.
1.8V power is provided by the on-board linear voltage regulator. It is used for CoreVDD,
PLLVDD1, PLLVDD2, OSCVDD1, OSCVDD2.
3.3V power must be provided by the external power supply. It is used for HVDD1 (host
interface - HIOVDD), HVDD2 (LCD panel interface - PIOVDD), HVDD3 (camera 2
interface - CIOVDD2), HVDD4 (camera 1 interface - CIOVDD1), and HVDD5 (SDRAM
interface).
HIOVDD is connected to 3.3V through a 0 ohm resistor, R31. If it is desired to have a
different voltage for HIOVDD, R31 must be removed and the desired supply connected to
pin 11 of connector P1.
PIOVDD is connected to 3.3V through a 0 ohm resistor, R33. If it is desired to have a
different voltage for PIOVDD, R33 must be removed and the desired supply connected to
pin 32 of connector H4.
CIOVDD2 is connected to 3.3V through a 0 ohm resistor, R34. If it is desired to have a
different voltage for CIOVDD2, R34 must be removed and the desired supply connected to
pin 15 of connector H7.
Seiko Epson Corporation
Technical Description
13